Improvement in hand-saws



Inman/fm.

N PETERS. PHDT HER, WASHING'TOrL D C @Hitch gieten @anni @time JAMES E. EMERSON, OF TRENTON, NEW JERSEY.

Letters Patent No. 82,299, dated September 22, 1868;

IMPROVEMENT IN HANDSAWS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JAMES E. EMERSON, of Trenton, in the county of Mercer, and State of New Jersey, have invented a new and useful Improvement in Fastening Saws to their Handles; and I do herebydeclare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in whichv Figure l represents a handle, with a section of a saw attached thereto by the improved fastening in question.

Figure 2 represents a section through the nut, by which the screw-fastening is drawn up.

Figure 3 represents a screw-bolt, by which a saw has been heretofore held to its handle.

Figures 4, 5, and 'represent modifications of the improved screwbolt fastening which I have invented.

A screw-bolt `has heretofore been used for fastening a saw to its handle, but 'it had no means of holding itself from turning when the screw-driver was used on the nut by which said screw-bolt and the saw were drawn up tight and held to or in thehandle. I do not claim such a screwbolt, nor do I claim generally the handle,v

saw-plate, and screw-bolt fastening, when such bolt has no means of being .held against the action of the-nut when it is turned by a screw-driver, wrench, or otherwise.

My invention consists in the use or application of a shouldered, recessed, or headed screw-bolt, for holding a saw to its handle, said shouldered, recessed,or headed bolt being prevented from turning by the act of running the nut up or back by its shoulders, recesses, or heads taking against the' saw-plate.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

The handle of the saw is made partially of wood, A, and partially of metal, B, the metal portion being of malleable iron, and cast, vor of brass, if so preferred, and furnished with a slot or recess that will take in ythe end of the saw. It also has a recess or socket cast in it, into which a nut, C, is set against a shoulder in the socket.

The saw-blade D has a T-shaped opening made in it, the stem of which extends to the end of the saw, so that the head and shank of a screw-bolt may lie, therein.

A headed screw-bolt, such as that shown at fig. 3, has heretoforebeen used, and drawn up by a nut, ,0, in the socket of the handle, but the bolt would turn under the action of the nut, and its head would turn out of the opening, or be skewed therein, and unsightly. I

The screw-bolt E, shown in placein g. I, has shoulders,l a, on opposite sides of its head, which take, one against' one side of the saw-plate, and the other against the opposite side thereof, so that when said bolt is drawn up by turning the nut G, said bolt is prevented from turning therewith.

The bolts E, shown in gs. 4, 5, and 6, are but modications of that shown in place in g. 1, in which modieations a a represent the projections or shoulders which take on or against opposite sides of the plate, and prevent the bolt'from turning under the action of the nut. In g; 6, the head appears as though divided,

and one-half slipped past the other'half to form these shoulders. In fig. 5, the slots or notches a take in the.

saw-plate, and consequently prevent the bolt from turning.

Other forms of bolt-heads may be made, but all involve the general plan of shoulders, recesses, or slots, that prevent the bolt from turning under the action of the nut, which, in this ease, is nicked, so as to be turned with an ordinary screw-driver.

Having thus fully described my invention, what I claim therein as new, and desire to secure by Letters Patent, is-

A shouldered and headed screw-bolt for holding a saw to its handle, so that said screw-bolt may be held from turning under the action of the nut, and constructed to operate as and for the purpose herein described and represented.

J. E. EMERSON.

Witnesses:

A. B. Sroucn'roiv, Guo. HOWARD ELLEns. 

